In the 19th century, Thomas Young presented his landmark experiment proving the controversial wave nature of light. He observed fringes in the intensity and thus attributed this phenomena to the interference between coherent light sources. In this study, we revisit this venerable with a modern twist using digital holograms. We then ask "fringes in what?", and show how that depending on how the optical fields interfere, fringe patterns in different observables can be observed. A tutorial approach to the topic is presented, aided by modern laboratory practices for the implementation of the underlying physics.